CS201 – Introduction To Programming Mcqs Pdf with Answers Part 05
201 When a pointer is incremented, it actually jumps the number of memory addresses
► According to data type
► 1 byte exactly
► 1 bit exactly
► A pointer variable can not be incremented
202 setw is a parameterized manipulator.
► True
► False
203 eof( ), bad( ), good( ), clear( ) all are manipulators.
► True
► False
204 In functions that return reference, use __________variables.
► Local
► Global
► Global or static
► None of the given option
205 The declarator of Plus (+) member operator function is
► Class-Name operator + (Class-Name rhs)
► operator Class-Name + ( )
► operator Class-Name + ( rhs)
► Class-Name operator + ( )
206 The compiler does not provide a copy constructor if we do not provide it.
► True
► False
207 What is the functionality of the following syntax to delete an array of 5 objects named arr allocated using new operator? delete arr ;
► Deletes all the objects of array
► Deletes one object of array
► Do not delete any object
► Results into syntax error This statement will call the destructor only for the object pointed by the arr and deallocate the space allocated to this object
208 What is the sequence of event(s) when allocating memory using new operator?
► Only block of memory is allocated for objects
► Only constructor is called for objects
► Memory is allocated first before calling constructor
► Constructor is called first before allocating memory 11 What is the sequence of event(s)
209 when deallocating memory using delete operator?
► Only block of memory is deallocated for objects
► Only destructor is called for objects
► Memory is deallocated first before calling destructor
► Destructor is called first before deallocating memory
210 new and delete operators cannot be overloaded as member functions.
► True
► False
211 The operator function of << and >> operators are always the member function of a class.
► True
► False
212 A template function must have at least ———- generic data type
► Zero
► One
► Two
► Three
213 If we do not mention any return_value_type with a function, it will return an _____ value.
► int
► void
► double
► float
214 Suppose a program contains an array declared as int arr[100]; what will be the size of array?
► 0
► 99
► 100
► 101
215 The name of an array represents address of first location of array element.
► True
► False The name of the array is a constant pointer which contains the memory is the address of first element of the array
216 Reusing the variables in program helps to save the memory
► True
► False
218 Which of the following option is true about new operator to dynamically allocate memory to an object?
► The new operator determines the size of an object
► Allocates memory to object and returns pointer of valid type
► Creates an object and calls the constructor to initialize the object
► All of the given options
219 New and delete are _____ whereas malloc and free are _____.
► Functions, operators
► Classes, operators
► Operators, functions
► Operators, classes
220 Like member functions, ______ can also access the private data members of a class.
► Non-member functions
► Friend functions
► Any function outside class
► None of the given options
221 Which of the following statement is best regarding declaration of friend function?
► Friend function must be declared after public keyword.
► Friend function must be declared after private keyword.
► Friend function must be declared at the top within class definition.
► It can be declared anywhere in class as these are not affected by the public and private keywords.
222 The operator function overloaded for an Assignment operator (=) must be
► Non-member function of class
► Member function of class
► Friend function of class
► None of the given options
223 For non-member operator function, object on left side of the operator may be
► Object of operator class
► Object of different class
► Built-in data type
► All of the given options
224 The operator function will be implemented as _____, if obj1 drive the – operator whereas obj2 is passed as arguments to – operator in the statement given below. obj3 = obj1 – obj2;
► Member function
► Non-member function
► Friend function
► None of the given options
225 Which one of the following is the declaration of overloaded pre-increment operator implemented as member function?
► Class-name operator +() ;
► Class-name operator +(int) ;
► Class-name operator ++() ;
► Class-name operator ++(int) ;
226 The static data members of a class are initialized _______
► at file scope
► within class definition
► within member function
► within main function
227 Class is a user defined___________.
► data type
► memory referee
► value
► none of the given options.
228 We can also define a user-defines manipulators.
► True
► False Parameterized manipulators require one or more arguments. setfill (near the bottom of the iomanip.h header file) is an example of a parameterized manipulator. You can create your own parameterized manipulators and your own simple manipulators.
229 Automatic variable are created on ________.
► Heap
► Free store
► static storage
► stack
230 If Num is an integer variable then Num++ means,
➢ Add 1 two times with Num
➢ Add 1 with Num
➢ Add 2 with Num
➢ Subtract 2 from Num
231 If the return type of a function is void then it means that it will,
➢ Return any type of data
➢ Return some specific type of data
➢ Return no data
➢ Return just character data
232 Which of the following is a valid class declaration?
➢ class A { int x; };
➢ class B { }
➢ public class A { }
➢ object A { int x; };
233 When we use manipulators in our program then which header file should be included?
➢ iostream.h
➢ stdlib.h
➢ stdio.h
➢ iomanip.h
234 We can also create an array of user define data type.
➢ True
➢ False
235 The normal source of cin object is,
➢ File
➢ Disk
➢ Keyboard
➢ RAM
236 A stream is an ordered sequence of bytes.
➢ True
➢ False
237 What is the sequence of event(s) when allocating memory using new operator?
➢ Only block of memory is allocated for objects
➢ Only constructor is called for objects
➢ Memory is allocated first before calling constructor
➢ Constructor is called first before allocating memory
238 We can delete an array of objects without specifying [] brackets if a class is not doing dynamic memory allocation internally.
➢ True
➢ False 10
239 The second parameter of operator functions for << and >> are objects of the class for which we are overloading these operators.
➢ True
➢ False
240 Which looping process checks the test condition at the end of the loop?
➢ for
➢ while
➢ do while
➢ no looping process checks the test condition at the end
241 In a group of nested loops, which loop is executed the most number of times?
➢ the outermost loop
➢ the innermost loop
➢ all loops are executed the same number of times
➢ cannot be determined without knowing the size of the loops
242 Template class can not have static variables.
➢ True
➢ False
243 Consider the following statements to initialize a two-dimensional array.
➢ int arr[2][3] = {4, 8, 9, 2, 1, 6} ;
➢ int arr[3][2] = {4, 8, 9, 2, 1, 6} ;
➢ int arr[][2] = {{4,8},{9, 2},{1, 6}} ;
244 =Which of the following option(s) are correct to initialize a two-dimensional array with 3 rows and 2 columns?
➢ (ii) only
➢ (iii) only
➢ (ii) and (iii)
➢ and (iii)
245 There is a pointer variable named ptr of type int then address of which type of variable the ptr will store in it?
➢ variable of type char
➢ variable of type short
➢ variable of type int
➢ variable of type double
246 Let suppose Union intorDouble{ Int ival; Double charvar; }; main(){
intorDouble VAZ; int size ; size = sizeof(VAZ); } What will be the value of variable “size”, if int occupies 4 bytes and double occupies 8 bytes?
➢ 2
➢ 4
➢ 8
➢ 12
247 new and delete are _____ whereas malloc and free are _____.
➢ Functions, operators
➢ Classes, operators
➢ Operators, functions
➢ Operators, classes
248 The member functions of a class occupy _____ region in memory for ____ object(s) of class.
➢ separate, each
➢ common, all
➢ different, each
➢ different, all
249 Friend functions are _____ of a class.
➢ Member functions
➢ Public member functions
➢ Private member functions
➢ Non-member functions
250 Which of the following is true while overloading operators?
➢ Precedence of an operator can be changed
➢ The arity (number of operands) can be changed
➢ No new operators can be created
➢ Associativity of an operator can be changed
251 Which of the following option will be true to overload the -= operator?
➢ only – operator needs to be overloaded (not sure)
➢ Minus (-) and = operators need to be overloaded
➢ the -= operator need to be overloaded explicitly
➢ the – and = operators need to be overloaded implicitly
252 The input/output streams; cin and cout are ____
➢ Operators
➢ Functions
➢ Objects
➢ Structures
253 dec, hex, oct are all __________
➢ Member functions
➢ Objects of input/output streams
➢ Parameterized manipulators
➢ Non-parameterized manipulators
254 What will be the output of the following statement? cout << setbase(16) << 52 ;
➢ 74
➢ 52
➢ 34
➢ 64
255 The first parameter of overloaded stream insertion operator is _________ where second parameter is _______
➢ input stream, object of class
➢ object of class, output stream
➢ output stream, object of class
➢ object of class, input stream
256 We can also do conditional compilation with preprocessor directives.
➢ True
➢ False
257 With user-defined data type variables (Objects), self assignment can produce __________.
➢ Syntax error
➢ Logical error
➢ Link error
➢ Non of the given options
258 The return type of the operator function for >> operator is ________.
➢ class for which we overload this operator
➢ reference of ostream class (ostream&)
➢ reference of istream class (istream&)
➢ void
259 When an object of a class is defined inside an other class then,
➢ Constructor of enclosing class will be called first
➢ Constructor of inner object will be called first
➢ Constructor and Destructor will be called simultaneously
➢ None of the given options
260 Where we can include a header file in the program?
➢ any where
➢ in start
➢ at the end
➢ none of the given options.